WO1989012856A1 - Systeme de changement de vitesse pour vehicules a moteur - Google Patents

Systeme de changement de vitesse pour vehicules a moteur Download PDF

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Publication number
WO1989012856A1
WO1989012856A1 PCT/EP1989/000671 EP8900671W WO8912856A1 WO 1989012856 A1 WO1989012856 A1 WO 1989012856A1 EP 8900671 W EP8900671 W EP 8900671W WO 8912856 A1 WO8912856 A1 WO 8912856A1
Authority
WO
WIPO (PCT)
Prior art keywords
joint
driver head
shift
head
finger
Prior art date
Application number
PCT/EP1989/000671
Other languages
German (de)
English (en)
Inventor
Fritz BÜHLMAIER
Original Assignee
Zahnradfabrik Friedrichshafen Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zahnradfabrik Friedrichshafen Ag filed Critical Zahnradfabrik Friedrichshafen Ag
Publication of WO1989012856A1 publication Critical patent/WO1989012856A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/042—Ratio selector apparatus comprising a final actuating mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/3016—Final output mechanisms varying the leverage or force ratio

Definitions

  • the invention relates to a switching device for a gear change transmission of a motor vehicle, the shift lever which is guided in a fixed pivot bearing for shifting individual gear stages within an H-shaped shift pattern and which by means of its shift finger protruding beyond the pivot bearing engages in a driver head, on which one engages in the Gear shift transmission guiding displaceable and rotatable shift shaft is fastened, a first joint causing a rotation of the shift shaft being provided between the end of the shift finger and the driving head.
  • a switching device of the aforementioned type is known from DE-OS 32 18 872. Since in this switching device the shift shaft engages outside the extension of the shift finger on the driving head, the direction of rotation of the shift shaft is always opposite to the movement of the shift lever, ie, pivoting the shift lever to the right leads to a rotational movement of the shift shaft to the left. There is a fixed relationship between the gear ratio in the selection direction and the gear ratio in the switching direction.
  • the gear ratio in the direction of selection in which the selector shaft is rotated is namely determined by the distance between the pivot bearing, joint and central axis of the selector shaft, while the gear ratio in the switching direction in which the selector shaft is displaced is determined by the distance between the pivot bearing and the Joint. It is therefore not possible to change the gear ratio while maintaining the gear ratio or vice versa.
  • the invention is therefore based on the object of providing the possibility for a switching device of the type mentioned to vary the dialing and switching ratio with simple means without structural changes.
  • Varying the distance between the two joints from one another and relative to the swivel bearing specifies gear ratios for both movement levels of the shift lever.
  • the clearance provided between the joints and the driver head in a plane offset by 90 degrees to the switching movement plane permits corresponding compensatory movements of the driver head.
  • the joints are each slidable in guide slots of the driver head, which are a vertical distance from each other have and whose longitudinal central axes intersect at right angles, be arranged.
  • the shift finger engages in the respective guide slot of the driver head without play via the joints in the switching or selection direction. If the shift finger moves with one of the two joints in the longitudinal direction of the guide slot, no actuating force is transmitted to the driver head via this joint.
  • Corresponding guide slots can be arranged in the driver head with little construction effort.
  • these guide slots can be produced, for example, in that the driver head is formed from two rectangular sleeve sections.
  • Corresponding sleeves can, for example, be produced individually as sections of profiled tubes, these tube sections being fastened to one another with a course of their guide slots offset by 90 °.
  • the driver head can be produced as a sheet metal part, ie, corresponding rectangular guide slots are formed in the corresponding sheet metal blank.
  • the constructional effort for the production of the driving head is thus low, and there are favorable possibilities for mass production.
  • friction and wear between the shift finger and the driving head can be reduced in that the joints are designed as a joint ball formed on the shift finger and encompassing sleeve-shaped ball receptacles, the ball receptacles being guided in the guide slots of the driving head.
  • the ball receptacles preferably have a cylindrical outer contour.
  • the position of the driver head relative to the shift finger being able to compensate for one another due to the free movement of the bolt in the elongated hole.
  • the bolt transmits the shifting force of the shift finger to the driver head, while the joint ball has sufficient clearance within the channel-shaped guide slot.
  • All the aforementioned configurations of the invention have the advantage that the transmission ratio of the selector movement of the shift rod can be varied compared to the transmission ratio of the shift movement of the shift rod. This is done in a simple manner by changing the distance dimensions of the joints relative to the pivot bearing and the joints to one another.
  • Fig. 1 shows a longitudinal section through a
  • FIG. 2 shows a plane of the longitudinal section through 90 ° changed through the switching device according to FIG. 1, in which the switching finger is moved into a "switching" position
  • Fig. 3 shows a further training
  • Switching device in which a driver head is attached to the switching finger via a bolt and an elongated hole, in longitudinal section in the "switching" movement plane,
  • Fig. 4 shows a longitudinal section through the
  • Fig. 5 is a schematic diagram of the
  • Fig. 6 shows another schematic diagram from which the different switching angles are shown depending on the position of the second joint.
  • 1 denotes a shift lever which is guided in a stationary manner via a pivot bearing 2 on a gear change transmission 3 shown in sections.
  • the pivot bearing 2 is arranged in a support element 4 fastened to the gear change transmission 3.
  • the shift lever 1 has a protruding shift finger 5 on the pivot bearing 2, which engages in a timer head 6.
  • a shift shaft 7 is fastened, which, guided into the interior of the gear change transmission 3, actuates shifting claws via a shift element (not shown).
  • the driver head 6 is designed as a sheet metal part, the lower one
  • Has guide slot 8 the extent of which can be seen in particular in FIG. 2.
  • This lower guide slot 8 is used to guide a first joint 9, which is inserted in the guide slot 8 without play so that it causes the driving head 6 in the plane of movement of the shift lever 1 according to FIG. 1 to rotate about the central axis of the shift shaft 7.
  • this first joint 9 does not transmit any shifting forces, since it can move freely in the lower guide slot 8 due to its two-sided clearance 10.
  • the driver head 6 With a vertical distance to the first joint 9 or to the lower guide slot 8, the driver head 6 has an upper guide slot 11 in which the
  • Shift finger 5 is guided over a second joint 12.
  • This upper guide slot 11 runs at right angles to the lower guide slot 8 and has a corresponding clearance 10 on both sides of the second joint 12.
  • the second joint 12 transmits a switching movement to the switching shaft 7, that is to say that arranged in this plane without play in the upper guide slot second joint 12 transmits a switching force via the driving head 6 to the switching shaft 7, which is directed such that the switching shaft 7 is displaced longitudinally.
  • the upper guide slot 11 has a free passage 10 on both sides of the second joint 12, no switching force is transmitted to the driving head 6 when the shift lever 1 is moved about a plane of movement extending at right angles thereto (FIG. 1).
  • the corresponding interrelation of the guide slots 8 and 11 assigned to the two joints 9 and 12 leads to a switching force being transmitted from one of the two joints in one plane of movement, while the shift finger 5 can move freely in the other guide slot.
  • FIGS. 3 and 4 has a modified design of the driver head 6 and the second joint 12 compared to the aforementioned embodiment.
  • the switching movement of the switching shaft 7, in which it is displaced longitudinally, likewise results from a displacement of the driving head 6 via the second joint 12.
  • the second joint 12 consists of an elongated hole 13 arranged in the switching finger 5, through which a bolt 14 fastened to the driving head 6 is passed through.
  • This bolt 14, as can be seen in FIG. 3, transmits the switching force to the driving head 6, since it is supported on the wall of the slot 13 in this direction of movement of the switching lever 1.
  • the first joint 9 has one
  • Joint ball 15 which can move freely in this plane of movement in a groove-like guide slot 8 arranged at the end of the driver head.
  • the outer contour of the driving head 6 is cup-shaped. 4 is transmitted to the selector shaft 7 by the joint ball 15 pivoting the driver head 6, the driver head 6 being located on its upper one End can move freely due to the clearance 10 provided on both sides of the shift finger and the arrangement of the bolt 14 in the elongated hole 13.
  • the distance between the joints 9 and 12 is designated a, while b corresponds to the distance between the second joint 12 and the pivot bearing 2.
  • a certain selection angle o is established due to the relationship of the distance a to the sum of the distances a + b, since on the driving head 6 or on the Shift shaft 7
  • the translation for the switching movement (FIG. 6), that is to say the displacement S of the switching shaft 7, depends solely on the distance between the point of engagement of the switching shaft 7 on the driving head 6 and the pivot bearing 2, this point of attack usually being with the switching shaft just being formed 7 coincides with the second joint 12.
  • the selector shaft can also have a cranked course so that these points do not coincide.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

Un système de changement de vitesse (3) de véhicule à moteur comprend un levier (1) de changement de vitesse monté dans un support pivotant stationnaire (2) et dont le doigt (5) de passage de vitesse qui fait saillie sur le support pivotant (2) enclenche une tête d'entraînement (6). Un arbre (7) de changement de vitesse mobile et pivotable est assujetti à la tête d'entraînement et s'étend jusqu'au (3) train d'engrenage à changement de vitesse. Une première articulation (9) est agencée entre l'extrémité du doigt (5) de passage de vitesse et la tête (6) d'entraînement. Afin d'obtenir des angles de sélection et des rapports de démultiplication divers, l'arbre (7) de changement de vitesse est fixé entre le support pivotant (2) et l'extrémité du doigt (5) de passage de vitesse et une deuxième articulation entre le doigt (5) de passage de vitesse et la tête d'entraînement (6) qui entraîne la torsion de l'arbre (7) de changement de vitesse est également agencée à ce niveau, entre le doigt (5) de passage de vitesse et la tête d'entraînement (6). Les axes d'actionnement des deux articulations (9 et 12) se croisent. Chaque articulation (9 et 12) présente une course libre (10) par rapport à la tête d'entraînement qui s'étend dans la direction de l'axe d'actionnement de l'autre articulation.
PCT/EP1989/000671 1988-06-18 1989-06-13 Systeme de changement de vitesse pour vehicules a moteur WO1989012856A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3820661 1988-06-18
DEP3820661.7 1988-06-18

Publications (1)

Publication Number Publication Date
WO1989012856A1 true WO1989012856A1 (fr) 1989-12-28

Family

ID=6356762

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/000671 WO1989012856A1 (fr) 1988-06-18 1989-06-13 Systeme de changement de vitesse pour vehicules a moteur

Country Status (3)

Country Link
DE (1) DE3919251C2 (fr)
ES (1) ES2013674A6 (fr)
WO (1) WO1989012856A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357823A (en) * 1993-04-14 1994-10-25 New Venture Gear, Inc. Gearshift assembly for manual transmissions
WO2001023782A1 (fr) * 1999-09-30 2001-04-05 Daimlerchrysler Ag Dispositif de commande pour changement de vitesse a roues dentees

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9001518U1 (de) * 1990-02-09 1990-04-12 J I Case GmbH, 4040 Neuss Schaltvorrichtung für ein Kraftfahrzeug-Wechselgetriebe, insbesondere für Ackerschlepper
DE19803607A1 (de) * 1998-01-30 1999-08-12 Daimler Chrysler Ag Schaltvorrichtung für ein Zahnräderwechselgetriebe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2045777A1 (de) * 1969-12-26 1971-07-08 Automobiles Peugeot. Paris: Regie Nationale des Usines Renault, Billancourt; (Frankreich) Betätigungsvorrichtung fur Schaltge triebe
DE3218872A1 (de) * 1982-05-19 1983-11-24 Fiat Veicoli Industriali S.p.A., 10100 Torino Schaltvorrichtung fuer ein gangwechselgetriebe von fahrzeugen, insbesondere nutzfahrzeugen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2045777A1 (de) * 1969-12-26 1971-07-08 Automobiles Peugeot. Paris: Regie Nationale des Usines Renault, Billancourt; (Frankreich) Betätigungsvorrichtung fur Schaltge triebe
DE3218872A1 (de) * 1982-05-19 1983-11-24 Fiat Veicoli Industriali S.p.A., 10100 Torino Schaltvorrichtung fuer ein gangwechselgetriebe von fahrzeugen, insbesondere nutzfahrzeugen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357823A (en) * 1993-04-14 1994-10-25 New Venture Gear, Inc. Gearshift assembly for manual transmissions
WO2001023782A1 (fr) * 1999-09-30 2001-04-05 Daimlerchrysler Ag Dispositif de commande pour changement de vitesse a roues dentees
US6666104B2 (en) 1999-09-30 2003-12-23 Daimler-Chrysler Ag Shift device for a gear change transmission

Also Published As

Publication number Publication date
DE3919251C2 (de) 1998-06-18
ES2013674A6 (es) 1990-05-16
DE3919251A1 (de) 1989-12-21

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